You've been hearing about the Chicago Architectural Biennial all fall. If you haven't done anything about it yet, you still have time to see some public events or check out the impressive exhibition at the Chicago Cultural Center. It's sprawling, taking over all of the center's public spaces, so you can either dip in judiciously or settle in for an in-depth examination of the state of architecture, present and future. Tip: Don't limit yourself to the first floor; some of the coolest exhibits are upstairs. Through Jan. 3. Free. Chicago Cultural Center, 78 E. Washington St.
